JPS4878911A - - Google Patents
Info
- Publication number
- JPS4878911A JPS4878911A JP47122084A JP12208472A JPS4878911A JP S4878911 A JPS4878911 A JP S4878911A JP 47122084 A JP47122084 A JP 47122084A JP 12208472 A JP12208472 A JP 12208472A JP S4878911 A JPS4878911 A JP S4878911A
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
- G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Digital Magnetic Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21597872A | 1972-01-03 | 1972-01-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4878911A true JPS4878911A (xx) | 1973-10-23 |
| JPS582408B2 JPS582408B2 (ja) | 1983-01-17 |
Family
ID=22805161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP47122084A Expired JPS582408B2 (ja) | 1972-01-03 | 1972-12-07 | ジキキオクシステム |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3792454A (xx) |
| JP (1) | JPS582408B2 (xx) |
| CA (1) | CA998170A (xx) |
| DE (1) | DE2300179C2 (xx) |
| FR (1) | FR2167585B1 (xx) |
| GB (1) | GB1382515A (xx) |
| IT (1) | IT968714B (xx) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5264841A (en) * | 1975-11-25 | 1977-05-28 | Nippon Telegr & Teleph Corp <Ntt> | Code conversion system |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4323931A (en) * | 1976-07-14 | 1982-04-06 | Sperry Corporation | Method and apparatus for encoding and recovering binary digital data |
| IT1091439B (it) * | 1977-10-13 | 1985-07-06 | Studi E Lab Telcomunicazioni S | Procedimento e sistema di modulazione e demodulazione per trasmissione numerica |
| DE2828219A1 (de) * | 1978-06-28 | 1980-01-10 | Bosch Gmbh Robert | Verfahren zur aufzeichnung und wiedergabe digitaler daten auf magnetspeicher |
| US4219851A (en) * | 1978-11-24 | 1980-08-26 | Honeywell Information Systems Inc. | Group coded recording data recovery system |
| FR2460522A1 (fr) * | 1979-07-02 | 1981-01-23 | Cii Honeywell Bull | Procede et dispositif d'enregistrement magnetique numerique avec polarisation a haute frequence |
| JPS5665311A (en) * | 1979-10-27 | 1981-06-03 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic recording and reproduction system for digital information |
| GB2079566B (en) * | 1980-05-16 | 1985-01-09 | Racal Recorders Ltd | Data encoding and/or decoding |
| US5577015A (en) * | 1980-07-16 | 1996-11-19 | Discovision Associates | System for recording digital information in a pulse-length modulation |
| US5253244A (en) * | 1980-07-16 | 1993-10-12 | Discovision Associates | System for recording digital information in a pulse-length modulation format |
| US5553047A (en) * | 1980-07-16 | 1996-09-03 | Discovision Associates | System for recording digital information in a pulse-length modulation format |
| NL8203619A (nl) * | 1982-09-20 | 1984-04-16 | Philips Nv | Werkwijze voor het optekenen van een digitaal informatiesignaal op een registratiedrager, een registratiedrager voorzien van een dergelijk informatiesignaal en een inrichting voor het uitlezen respectievelijk inschrijven van een dergelijke registratiedrager. |
| US4635141A (en) * | 1982-10-13 | 1987-01-06 | United States Design Corporation | Method and apparatus for storing data on magnetic or optical media |
| DE3605396A1 (de) * | 1986-02-20 | 1987-08-27 | Thomson Brandt Gmbh | Uebertragungssystem mit einem uebertragungscode fuer binaere daten |
| US6819512B2 (en) | 2003-02-18 | 2004-11-16 | Protoscience, Inc. | Triple-attribute method of encoding and decoding magnetic data |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3374475A (en) * | 1965-05-24 | 1968-03-19 | Potter Instrument Co Inc | High density recording system |
-
1972
- 1972-01-03 US US00215978A patent/US3792454A/en not_active Expired - Lifetime
- 1972-08-22 CA CA149,987A patent/CA998170A/en not_active Expired
- 1972-09-28 GB GB4492672A patent/GB1382515A/en not_active Expired
- 1972-10-06 IT IT30196/72A patent/IT968714B/it active
- 1972-12-07 JP JP47122084A patent/JPS582408B2/ja not_active Expired
-
1973
- 1973-01-02 FR FR7300055A patent/FR2167585B1/fr not_active Expired
- 1973-01-03 DE DE2300179A patent/DE2300179C2/de not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3374475A (en) * | 1965-05-24 | 1968-03-19 | Potter Instrument Co Inc | High density recording system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5264841A (en) * | 1975-11-25 | 1977-05-28 | Nippon Telegr & Teleph Corp <Ntt> | Code conversion system |
| JPS5857805B2 (ja) * | 1975-11-25 | 1983-12-22 | 日本電信電話株式会社 | コ−ド変換回路 |
Also Published As
| Publication number | Publication date |
|---|---|
| CA998170A (en) | 1976-10-05 |
| DE2300179A1 (de) | 1973-07-26 |
| JPS582408B2 (ja) | 1983-01-17 |
| GB1382515A (en) | 1975-02-05 |
| FR2167585B1 (xx) | 1976-08-27 |
| IT968714B (it) | 1974-03-20 |
| FR2167585A1 (xx) | 1973-08-24 |
| DE2300179C2 (de) | 1983-09-15 |
| US3792454A (en) | 1974-02-12 |